SDBot Remote Access Trojan

SDBot is a newly observed C-- based remote access trojan created by the TA505 advanced persistent threat group for use in their campaigns.

Threat ID:: CC-3264
Category:: Trojan
Threat Severity:: Medium
Threat Vector:
Published:: 17 October 2019 12:00 AM

Report a cyber attack: call 0300 303 5222 or email [email protected]

Summary

SDBot is a newly observed C-- based remote access trojan created by the TA505 advanced persistent threat group for use in their campaigns.

Affected platforms

The following platforms are known to be affected:

Microsoft Windows

Microsoft Windows - All versions

Threat details

As SDBot is a second stage payload, it is reliant on TA505's other tools for its delivery. At the time of publication, only the Get2 loader has been observed distributing SDBot, although it is likely other tools such as ServHelper and AndroMut may be used in future campaigns.

Once installed, SDBot uses application shimming (ATT&CK T1138) to escalate its privileges before disabling security services. It will then connect to a command and control sever over TCP port 443 to await further commands. By default, SDBot has the following capabilities:

launch a command shell
create remote desktop sessions
extract files
download and install further payloads

Remediation steps

Type	Step
	To prevent and detect a trojan infection, ensure that: A robust program of education and awareness training is delivered to users to ensure they don’t open attachments or follow links within unsolicited emails. All operating systems, anti-virus and other security products are kept up-to-date. Regular anti-virus and security scans are performed on your organisation’s estate. All day-to-day computer activities such as email and internet are performed using non-administrative accounts. Strong password policies are in place. Network, proxy and firewall logs should be monitored for suspicious activity. User accounts accessed from affected devices should be reset on a clean computer. Your organisation adopts a holistic all-round approach to Cyber Security as advocated by the 10 Steps to Cyber Security.

Type

Step

To prevent and detect a trojan infection, ensure that:

A robust program of education and awareness training is delivered to users to ensure they don’t open attachments or follow links within unsolicited emails.
All operating systems, anti-virus and other security products are kept up-to-date.
Regular anti-virus and security scans are performed on your organisation’s estate.
All day-to-day computer activities such as email and internet are performed using non-administrative accounts.
Strong password policies are in place.
Network, proxy and firewall logs should be monitored for suspicious activity.
User accounts accessed from affected devices should be reset on a clean computer.
Your organisation adopts a holistic all-round approach to Cyber Security as advocated by the 10 Steps to Cyber Security.

Last edited: 11 January 2022 1:34 pm